I think we can come up with many ideas without having any of the argument over the rights and wrongs please.
Let's just consider the options for head ornaments for a Princes Consort - travelling to the coronation, during parts of the ceremony and on leaving.
I used to think the remodelled Durbar Tiara was crying out for something to be added to the tiny bar across the top and that it was there to hold a setting fcr the Koh-i-Noor.